The key idea is that when you have a BibTeX database (a plain-text file with the conventional filename extension. There are minor variations and discrepancies. Section 2.8 of Xie ( 2016) has explained the details. Nearly all Markdown applications support the basic syntax outlined in the original Markdown design document. There are multiple ways to insert citations, and we recommend that you use BibTeX databases, because they work better when the output format is LaTeX/PDF. Footnotes are put inside the square brackets after a caret ^, e.g., ^. The syntax for images is similar: just add an exclamation mark, e.g., !(path/to/image). Hyperlinks are created using the syntax (link), e.g., (). To include \(n\) literal backticks, use at least \(n+1\) backticks outside, e.g., you can use four backticks to preserve three backtick inside: ```` ```code``` ````, which is rendered as ```code```. If you are not using RStudio then you simply need to call the rmarkdown::render function, for example: rmarkdown::render. If you are using RStudio, then the Knit button (Ctrl+Shift+K) will render the document and display a preview of it. To mark text as inline code, use a pair of backticks, e.g., `code`. There are two ways to render an R Markdown document into its final output format. A pair of carets ( ^) produce a superscript (e.g., Cu^2+^ renders Cu 2+). A pair of tildes ( ~) turn text to a subscript (e.g., H~3~PO~4~ renders H 3PO 4). ref. Options are set with options() at start of chunk. R.options NULL Local R options to use with the chunk. Bold text is produced using a pair of double asterisks ( **text**). option default value description Chunks opts.label NULL The label of options set in knitr:: optstemplate() to use with the chunk. Inline text will be italic if surrounded by underscores or asterisks, e.g., _text_ or *text*. 19.7 Output arguments for render functions. Display equations are referenced by two pairs of. Generates: So this text would have an equation here E mc2. So this text would have an equation here E mc2. Inline equations are referenced by a pair of dollar signs.
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